There is a Youtube video of a guy who removed the woofer. The trim ring is glued down at four points, which are the midpoints between the screws. He removed the trim ring by using a big sharp knife to pry it off, but if you watch it, it will make you cringe because he pays no attention to the knife edge coming in contact with the driver surround. The glue points are at the 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock positions. At these positions, the trim ring has studs that insert into holes in the baffle; the studs are glued into the holes. Perhaps it would be possible to use a drill to drill out the studs, but if I were doing it I would probably sacrifice the trim ring in order to minimize damage to the surrounding area. Since the trim ring isn't glued down at the points where the screws are found, I would use something like a pair of wire snips to cut through the trim ring at the holes for the screws. One snip on one side of the hole, another snip on another side of the hole. Repeat for the other three holes. Then pull up on the broken ends and just break apart the four pieces until there's nothing left except for the four studs. Whereas the four screws are the screws that secure the driver, the four studs are located outside the perimeter of the driver. As such, it should be possible to remove the driver with the studs still glued in place, which would minimize risk of damaging the driver when dealing with the studs. I don't know whether I'd cut the studs flush with the baffle face or drill them out. If I had a drill press I would maybe drill the studs out, but without a drill press I'd probably use one of those thin Japanese saws to cut them off flush. The video isn't interesting until about 30 minutes in.
